Properties of HA-based composite films fabricated by pulsed laser deposition with an in-situ heat treatment

Pulsed laser deposition (PLD) with an in-situ heat treatment was adopted to fabricate hydroxyapatite/bioglass/wollastonite composite bioactive films, and the properties of the films were investigated by SEM, EDS, XRD, FTIR, scratch test and in vivo test. The PLD process at 600 °C with an in-situ heat treatment at 800 °C for 1 h promotes the precipitation of nano acicular structure, induces the c-axis oriented growth of HA and causes the crystallization of CaSiO3, consequently affects the tissue response to the films in physiological environment. The in vivo test indicates that the 600 °C + 800 °C film exhibits satisfactory osseointegration ability, and can be used as a potential candidate for bone implants. •HA/BG/WS films were fabricated by PLD with an in-situ heat treatment.•Nano acicular and c-axis oriented HA were detected in the 600 °C + 800 °C film.•The 600 °C + 800 °C film exhibits excellent osseointegration ability.